Question 1

Which are common protein coenzymes?

Accepted Answer

A) Cytochromes. 
B) Phylloquinones. 
C) Tetrahydrofolates. 
D) α-tocopherols . 
A) Cytochromes. 
B) Phylloquinones. 
C) Tetrahydrofolates. 
D) α-tocopherols .

Question 2

The structure shown below is which coenzyme?

Accepted Answer

A) QH₂. 
B) Vitamin B12. 
C) Biotin. 
D) Thiamine pyrophosphate. 
A) QH₂. 
B) Vitamin B12. 
C) Biotin. 
D) Thiamine pyrophosphate.

Question 3

Which atom is the reactive center on biotin?

Accepted Answer

A) Arrow 1 
B) Arrow 2 
C) Arrow 3 
D) Arrow 4 
A) Arrow 1 
B) Arrow 2 
C) Arrow 3 
D) Arrow 4

Question 4

Match each of the following vitamins with an associate nutritional deficiency disease.
-Folate

Accepted Answer

A) Pernicious anemia 
B) anemia 
C) Dermititis in humans 
D) scurvy 
E) beriberi 
A) Pernicious anemia 
B) anemia 
C) Dermititis in humans 
D) scurvy 
E) beriberi

Question 5

Ca++ or Mg++ are most likely to be part of ________,while Zn++ or Fe++ are present in ________.

Accepted Answer

A) metal-activated enzymes;metalloenzymes 
B) metalloenzymes;metal-activated enzymes 
C) cofactors;coenzymes 
D) coenzymes;cofactors 
E) apoenzymes;holoenzymes 
A) metal-activated enzymes;metalloenzymes 
B) metalloenzymes;metal-activated enzymes 
C) cofactors;coenzymes 
D) coenzymes;cofactors 
E) apoenzymes;holoenzymes

Question 6

Which metabolic function depends on Coenzyme A?

Accepted Answer

A) Oxidation of fuel molecules. 
B) Synthesis of DNA. 
C) Synthesis of guanine. 
D) Conversion of ATP to ADP. 
A) Oxidation of fuel molecules. 
B) Synthesis of DNA. 
C) Synthesis of guanine. 
D) Conversion of ATP to ADP.

Question 7

What is another name for vitamin B12?

Accepted Answer

A) Thiamine. 
B) Tetrahydrofolate. 
C) Cobalamin. 
D) Biotin. 
A) Thiamine. 
B) Tetrahydrofolate. 
C) Cobalamin. 
D) Biotin.

Question 8

What is another name for vitamin B1?

Accepted Answer

A) Biotin. 
B) Thiamine. 
C) Lipoamide. 
D) Pyridoxal phosphate. 
A) Biotin. 
B) Thiamine. 
C) Lipoamide. 
D) Pyridoxal phosphate.

Question 9

Another name for vitamin K is phylloquinone.

Accepted Answer

A) True 
 B)False

Question 10

Why has dihydrofolate reductase been identified as a potential target for chemotherapy in the treatment of cancer?

Accepted Answer

A) It is a hormone that is a primary control agent of the rate of mitosis. 
B) It is a DNA binding protein that activates a cancer oncogene. 
C) It is essential in DNA synthesis.Cell division will not occur without it. 
D) It selectively binds to a receptor on the surface of cancer cells and inactivates them. 
A) It is a hormone that is a primary control agent of the rate of mitosis. 
B) It is a DNA binding protein that activates a cancer oncogene. 
C) It is essential in DNA synthesis.Cell division will not occur without it. 
D) It selectively binds to a receptor on the surface of cancer cells and inactivates them.

Question 11

An internal aldimine forms when PLP is covalently bound to its enzyme.

Accepted Answer

A) True 
 B)False

Question 12

The reactive center of CoA is the -NH₃+ group.

Accepted Answer

A) True 
 B)False

Question 13

Which statement is false about 5,6,7,8-tetrahydrobiopterin?

Accepted Answer

A) It is required by the enzyme that catalyzes the synthesis of nitric oxide from arginine. 
B) It is synthesized by animals and other organisms. 
C) It is used in the transfer of phosphate groups during DNA synthesis. 
D) It is a reducing agent in the conversion of phenylalanine to tyrosine. 
A) It is required by the enzyme that catalyzes the synthesis of nitric oxide from arginine. 
B) It is synthesized by animals and other organisms. 
C) It is used in the transfer of phosphate groups during DNA synthesis. 
D) It is a reducing agent in the conversion of phenylalanine to tyrosine.

Which are common protein coenzymes?

The structure shown below is which coenzyme?

Which atom is the reactive center on biotin?

Match each of the following vitamins with an associate nutritional deficiency disease. -Folate

Ca++ or Mg++ are most likely to be part of ,while Zn++ or Fe++ are present in .

Which metabolic function depends on Coenzyme A?

What is another name for vitamin B12?

What is another name for vitamin B1?

Another name for vitamin K is phylloquinone.

Why has dihydrofolate reductase been identified as a potential target for chemotherapy in the treatment of cancer?

An internal aldimine forms when PLP is covalently bound to its enzyme.

The reactive center of CoA is the -NH₃+ group.

Which statement is false about 5,6,7,8-tetrahydrobiopterin?

Introduction to Biochemistry

Water

Amino Acids and the Primary Structures of Proteins

Proteins: Three-Dimensional Structure and Function

Properties of Enzymes

Mechanisms of Enzymes

Carbohydrates

Lipids and Membranes

Introduction to Metabolism

Glycolysis

Gluconeogenesis, the Pentose Phosphate Pathway, and Glycogen Metabolism

The Citric Acid Cycle

Electron Transport and Atp Synthesis

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Nucleic Acids

DNA Replication, repair, and Recombination

Transcription and RNA Processing

Protein Synthesis

Filters

Exam 7: Coenzymes and Vitamins

Which are common protein coenzymes?

The structure shown below is which coenzyme?

Which atom is the reactive center on biotin?

Match each of the following vitamins with an associate nutritional deficiency disease. -Folate

Ca++ or Mg++ are most likely to be part of ________,while Zn++ or Fe++ are present in ________.

Which metabolic function depends on Coenzyme A?

What is another name for vitamin B12?

What is another name for vitamin B1?

Another name for vitamin K is phylloquinone.

Why has dihydrofolate reductase been identified as a potential target for chemotherapy in the treatment of cancer?

An internal aldimine forms when PLP is covalently bound to its enzyme.

The reactive center of CoA is the -NH₃+ group.

Which statement is false about 5,6,7,8-tetrahydrobiopterin?

Introduction to Biochemistry

Water

Amino Acids and the Primary Structures of Proteins

Proteins: Three-Dimensional Structure and Function

Properties of Enzymes

Mechanisms of Enzymes

Carbohydrates

Lipids and Membranes

Introduction to Metabolism

Glycolysis

Gluconeogenesis, the Pentose Phosphate Pathway, and Glycogen Metabolism

The Citric Acid Cycle

Electron Transport and Atp Synthesis

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Nucleic Acids

DNA Replication, repair, and Recombination

Transcription and RNA Processing

Protein Synthesis

Filters

Ca++ or Mg++ are most likely to be part of ,while Zn++ or Fe++ are present in .